Why haven't my grapes turned purple?

Grape is a traditional fruit that many people like. With the improvement of people's living standards, the demand for grapes is also increasing. In this environment, the area of growing grapes has also expanded. Now you find that the grapes you planted turn slowly and have not turned purple, so I personally think it is related to the following reasons:

1. There are many varieties of grapes, and the appearance color of different varieties of grapes is also different. If the grapes you grow are not purple grapes, it is impossible for the grapes to turn purple when they are ripe.

2. I have been to several vineyards, and I have also seen many vines with long branches bearing fruits and few grape leaves. Therefore, the slow color change of grapes should be related to the proportion of roots, leaves and fruits. If the proportion of roots, leaves and fruits of your vine is not harmonious, the time of grape discoloration will be a little different.

I don't know if you know it beforehand. The discoloration time of old fruit and new fruit is slightly different. The older the fruit, the more serious the color change of grape fruit will be.

4, nitrogen grows leaves, too much nitrogen fertilizer will also make the fruit green. When your grape fruit becomes slow,

Need to think about whether it is related to the recent fertilization amount and element collocation.

It is particularly important to note that fertilization should be stopped from the beginning of grape coloring, and foliar fertilizer should be used to supplement fertilizer when necessary.

5. When the grapes are ripe and picked, if you want to color the grapes a little earlier, you can spray some red medicine in the early stage of coloring. In this regard, my personal opinion: unless absolutely necessary, try not to use this method.

In short, there are many factors that lead to the slow coloring of grapes, and the abnormal weather this year is also an irresistible factor. Therefore, it is best to ask the technicians nearby if you find that the grapes are turning slowly, so as to solve the problem quickly.

Personal opinion, for reference only.